Fix typo: siblingsWitSelf -> siblingsWithSelf
Match files like "3.jpg"
Match template name against whole filename
[Cache] Properly resets sorted array keys
[Page] Added special keys for forwarding and redirecting

* _redirect_to: absolute url
* _render_with: absolute/relative path
[Asset] Set 204 Not Modified response code when appropriate
[Gizmo] Match only GET requests for assets and thumbnails